We don’t know ________will happen in 100 years.
It’s kind _____you ________us with so much work. A. of; to help B. for; help C. of; helping
Remember to _________ the TV when you leave the room. A. turn on B. turn down C. turn off
He is tall, _____ his son is short. A. or B. while C. and
She has _____ this car for nearly ten years. A. buy B. bought C. had
________the workers were quite tired, _______ they still went on working. A. Because; / B. Although; but C. Although; /